CN112280531A - Natural adhesive for carton bonding - Google Patents
Natural adhesive for carton bonding Download PDFInfo
- Publication number
- CN112280531A CN112280531A CN202011352529.1A CN202011352529A CN112280531A CN 112280531 A CN112280531 A CN 112280531A CN 202011352529 A CN202011352529 A CN 202011352529A CN 112280531 A CN112280531 A CN 112280531A
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- Prior art keywords
- adhesive
- protein
- hours
- bonding
- carton
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J189/00—Adhesives based on proteins; Adhesives based on derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/324—Alkali metal phosphate
Abstract
The invention relates to a natural adhesive for bonding a carton, which not only improves the bonding strength of the adhesive, but also can change the physical and chemical properties of the adhesive by modifying soybean protein, so that the original putrescible molecular structure of the adhesive loses activity, the hydrophobicity is improved, the adhesive has good corrosion resistance and water resistance, the storage time and the use performance of the protein adhesive are effectively improved, the adhesive has good bonding capability to the carton, and the viscosity reaches more than 1.9Pa & s; the preparation raw materials are rich in source, low in price and renewable, harmful gases such as formaldehyde and phenol are not generated in the using process, harm to human health is avoided, and environmental pollution is avoided.
Description
Technical Field
The invention relates to the technical field of adhesive preparation, in particular to a natural adhesive for carton adhesion.
Background
In the field of adhesives, with the social development, research, development and use of environment-friendly adhesives have become the main development trend of the current society. Among them, starch and protein raw materials have wide sources and low cost, and become widely concerned objects, and starch adhesives have production problems of poor water resistance, high modification cost and the like.
The current research on protein adhesives is mainly to prepare natural protein glue for the wood industry by adding a cross-linking agent and an auxiliary agent into protein. However, protein adhesives are limited by their perishable nature, and therefore, when processed to produce adhesives, they are susceptible to bacterial growth, spoilage, decomposition, and the like, and are not conducive to bonding articles for long-term storage. Therefore, protein adhesives have not been well developed and utilized in spite of their high adhesive properties. Therefore, a need still exists for a corrosion-resistant proteinaceous environmental adhesive suitable for carton bonding.
Disclosure of Invention
The invention aims to provide a natural adhesive for bonding cartons.
The invention is realized by the following technical scheme:
a natural adhesive for bonding a carton is prepared from the following components in parts by weight: 17-22 parts of soybean protein, 52-58 parts of water, 1.3-1.4 parts of protein modifier, 0.34-0.36 part of stearic acid, 0.8-1.0 part of polyethylene glycol, 0.05-0.08 part of Y-aminopropyl methyl diethoxy silane and 0.4-0.5 part of sodium dihydrogen phosphate.
The soybean protein is composed of one or more of defatted soybean powder and soybean protein isolate.
The preparation method is realized by the following steps:
grinding soybean protein into powder, sieving with a sieve of 110-140 meshes, carrying out microwave treatment for 200 seconds with the treatment time of 180-200 meshes, then naturally cooling, standing for 3-4 hours, adding water, stirring and mixing uniformly, adding the prepared protein modifier, heating to 45-48 ℃, adding stearic acid and polyethylene glycol, placing in an aging box at 60-62 ℃ for aging treatment for 2-3 hours, taking out, cooling to 25-30 ℃, adding Y-aminopropylmethyldiethoxysilane and sodium dihydrogen phosphate, and continuing stirring for 30-40 minutes.
The microwave treatment frequency is 1500-1600 MHz.
The molecular weight of the polyethylene glycol is 1000.
The preparation method of the protein modifier comprises the following steps: weighing 7.1-7.3 g of calcium carbonate and 0.8-1.0 g of copper nitrate, placing the calcium carbonate and the copper nitrate into a beaker, adding 30-35 ml of deionized water, continuously stirring the mixture on a magnetic stirrer for 40-50 minutes, then adding 15-20 ml of 10-12% sodium hydroxide solution into the beaker under stirring, continuously stirring the mixture for 15-20 minutes, standing and aging the mixture for 12-16 hours at the temperature of 120-140 ℃, transferring the aged product into a reaction kettle, pressurizing the aged product to 1.15-1.19MPa, setting the reaction temperature to be 180-185 ℃, reacting the aged product for 19-21 hours, naturally cooling the aged product to 25-28 ℃ after the reaction is finished, pouring out supernatant liquid, sequentially washing the partial precipitate by using the deionized water and absolute ethyl alcohol for 3-5 times respectively, then placing the washed precipitate in a vacuum drying oven at the temperature of 80-90 ℃ for drying the mixture for 7-10 hours, cooling and grinding into powder to obtain the protein modifier with the particle size of 0.04-0.08 micron.
Compared with the prior art, the invention has the following advantages: in order to solve the problem of poor corrosion resistance of the existing protein adhesive, the invention provides a natural adhesive for carton adhesion, which not only improves the bonding strength of the adhesive, but also can change the physical and chemical properties of the adhesive by modifying soybean protein, so that the original putrescible molecular structure of the adhesive is inactivated, the hydrophobicity is improved, the natural adhesive has good corrosion resistance and water resistance, the storage time and the use performance of the protein adhesive are effectively improved, the natural adhesive has good bonding capability to a carton, and the viscosity reaches more than 1.9Pa & s; the preparation raw materials are rich in source, low in price and renewable, harmful gases such as formaldehyde and phenol are not generated in the using process, harm to human health is avoided, and environmental pollution is avoided. The invention expands the application of the adhesive in the carton processing industry, is expected to replace aldehyde-containing adhesives, solves the problems of the existing natural adhesive in the carton application field, brings more economic benefits and social benefits, and lays a foundation for the development of high-quality environment-friendly adhesives.
Detailed Description
In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described with reference to specific embodiments, and it should be understood that the specific embodiments described herein are only used for explaining the present invention and are not used for limiting the technical solutions provided by the present invention.
Example 1
A natural adhesive for bonding a carton is prepared from the following components in parts by weight: 17 parts of soybean protein, 52 parts of water, 1.3 parts of protein modifier, 0.34 part of stearic acid, 0.8 part of polyethylene glycol, 0.05 part of Y-aminopropyl methyl diethoxy silane and 0.4 part of sodium dihydrogen phosphate.
The soybean protein is composed of one or more of defatted soybean powder and soybean protein isolate.
The preparation method is realized by the following steps:
grinding soybean protein into powder, sieving with a 110-mesh sieve, performing microwave treatment for 180 seconds, then naturally cooling, standing for 3 hours, adding water, stirring and mixing uniformly, adding the prepared protein modifier, heating to 45 ℃, adding stearic acid and polyethylene glycol, placing in an aging oven at 60 ℃ for aging treatment for 2 hours, taking out, cooling to 25 ℃, adding Y-aminopropylmethyldiethoxysilane and sodium dihydrogen phosphate, and continuing stirring for 30 minutes.
The microwave treatment frequency is 1500 MHz.
The molecular weight of the polyethylene glycol is 1000.
The preparation method of the protein modifier comprises the following steps: weighing 7.1 g of calcium carbonate and 0.8 g of copper nitrate, placing the calcium carbonate and the copper nitrate into a beaker, adding 30 ml of deionized water, continuously stirring the mixture for 40 minutes on a magnetic stirrer, then adding 15 ml of a 10 mass percent sodium hydroxide solution into the beaker under stirring, continuously stirring the mixture for 15 minutes, standing and aging the mixture for 12 hours at 1200 ℃, transferring an aged product into a reaction kettle, pressurizing the mixture to 1.15MPa, setting the reaction temperature to be 180 ℃ and the reaction time to be 19 hours, naturally cooling the mixture to 25 ℃ after the reaction is finished, pouring out supernatant liquid, sequentially washing the lower part of precipitate by using the deionized water and absolute ethyl alcohol for 3 times respectively, then placing the precipitate into a vacuum drying box at 80 ℃ for drying for 7 hours, cooling and grinding the precipitate into powder to obtain the protein modifier with the particle size of 0.04-0.08 micrometers.
The protein adhesive is prepared by using defatted soybean powder as a raw material according to the preparation method of the embodiment 1, the storage period of the protein adhesive reaches 12 months, the protein adhesive is not decayed, the three-layer corrugated paper box board is bonded, and the bonding strength is tested according to GB/T6548-1998; the edge pressure strength is tested according to GB/T6546-; the paper weight of the three-layer corrugated board is 500g/m2, and the adhesive weight is 300 g/m 2. The adhesive prepared in example 1 was subjected to performance testing, three experiments were repeated, and finally, the average value of each performance parameter was determined, and the result was: the adhesive prepared in example 1 has an adhesive strength of 146N/10 cm and a side pressure strength of 8890N/m.
Comparative example 1
The difference from example 1 is that the microwave treatment process of the soy protein is omitted in the preparation of the natural adhesive, and the rest is kept the same; keeping irrelevant variables consistent, preparing the protein adhesive according to the preparation method of the comparative example 1, wherein the storage period of validity reaches 10 months, the protein adhesive is rotten and deteriorated, adhering the three-layer corrugated cardboard, and performing performance test on the prepared adhesive, wherein the three-layer corrugated cardboard is completely the same in manufacturing process, the adhesive strength of the prepared adhesive is 101N/10 cm, and the edge pressure strength of the cardboard is 6730N/m.
Example 2
A natural adhesive for bonding a carton is prepared from the following components in parts by weight: 20 parts of soybean protein, 55 parts of water, 1.35 parts of protein modifier, 0.35 part of stearic acid, 0.9 part of polyethylene glycol, 0.06 part of Y-aminopropyl methyl diethoxy silane and 0.45 part of sodium dihydrogen phosphate.
The soybean protein is composed of one or more of defatted soybean powder and soybean protein isolate.
The preparation method is realized by the following steps:
grinding soybean protein into powder, sieving with a 125-mesh sieve, performing microwave treatment for 190 seconds, then naturally cooling, standing for 3.5 hours, adding water, stirring and mixing uniformly, adding the prepared protein modifier, heating to 46 ℃, adding stearic acid and polyethylene glycol, placing in an aging oven at 61 ℃, aging for 2.5 hours, taking out, cooling to 28 ℃, adding Y-aminopropylmethyldiethoxysilane and sodium dihydrogen phosphate, and continuing to stir for 35 minutes.
The microwave treatment frequency is 1550 MHz.
The molecular weight of the polyethylene glycol is 1000.
The preparation method of the protein modifier comprises the following steps: weighing 7.2 g of calcium carbonate and 0.9 g of copper nitrate, placing the calcium carbonate and the copper nitrate into a beaker, adding 32 ml of deionized water, continuously stirring for 45 minutes on a magnetic stirrer, adding 18 ml of 11% sodium hydroxide solution into the beaker under stirring, continuously stirring for 18 minutes, standing and aging for 14 hours at 130 ℃, transferring an aged substance into a reaction kettle, pressurizing to 1.16MPa, setting the reaction temperature to 182 ℃, the reaction time to 20 hours, naturally cooling to 26 ℃ after the reaction is finished, pouring out supernatant liquid, sequentially washing the lower part of precipitate for 4 times by using deionized water and absolute ethyl alcohol, then placing the precipitate into a 85 ℃ vacuum drying box for drying for 8.5 hours, cooling and grinding into powder to obtain the protein modifier with the particle size of 0.04-0.08 micrometer.
The protein adhesive is prepared by using defatted soybean powder as a raw material according to the preparation method of the embodiment 2, the storage period of the protein adhesive reaches 12 months, the protein adhesive is not decayed, the three-layer corrugated paper box board is bonded, and the bonding strength is tested according to GB/T6548-1998; the edge pressure strength is tested according to GB/T6546-; the paper weight of the three-layer corrugated board is 500g/m2, and the adhesive weight is 300 g/m 2. The adhesive prepared in example 1 was subjected to performance testing, three experiments were repeated, and finally, the average value of each performance parameter was determined, and the result was: the adhesive prepared in example 2 has an adhesive strength of 147N/10 cm and a side pressure strength of 8915N/m.
Comparative example 2
The difference from the example 2 is that the addition of the protein modifier is omitted in the preparation of the natural adhesive, and the rest is consistent; keeping the irrelevant variables consistent, preparing the protein adhesive according to the preparation method of the comparative example 2, wherein the storage period of validity reaches 6 months, the protein adhesive has the phenomenon of putrefaction and deterioration, adhering the three-layer corrugated cardboard, and performing performance test on the prepared adhesive, wherein the manufacturing processes of the three-layer corrugated cardboard are completely the same, the adhesive strength of the prepared adhesive is 84N/10 cm, and the edge pressure strength of the cardboard is 6010N/m.
Example 3
A natural adhesive for bonding a carton is prepared from the following components in parts by weight: 22 parts of soybean protein, 58 parts of water, 1.4 parts of protein modifier, 0.36 part of stearic acid, 1.0 part of polyethylene glycol, 0.08 part of Y-aminopropyl methyl diethoxy silane and 0.5 part of sodium dihydrogen phosphate.
The soybean protein is composed of one or more of defatted soybean powder and soybean protein isolate.
The preparation method is realized by the following steps:
grinding soybean protein into powder, sieving with a 140-mesh sieve, performing microwave treatment for 200 seconds, then naturally cooling, standing for 4 hours, adding water, stirring and mixing uniformly, adding the prepared protein modifier, heating to 48 ℃, adding stearic acid and polyethylene glycol, placing in an aging oven at 62 ℃ for aging treatment for 3 hours, taking out, cooling to 30 ℃, adding Y-aminopropylmethyldiethoxysilane and sodium dihydrogen phosphate, and continuing stirring for 40 minutes.
The microwave treatment frequency is 1600 MHz.
The molecular weight of the polyethylene glycol is 1000.
The preparation method of the protein modifier comprises the following steps: weighing 7.3 g of calcium carbonate and 1.0 g of copper nitrate, placing the calcium carbonate and the copper nitrate into a beaker, adding 35 ml of deionized water, continuously stirring the mixture for 50 minutes on a magnetic stirrer, then adding 20 ml of 12% sodium hydroxide solution into the beaker under stirring, continuously stirring the mixture for 20 minutes, standing and aging the mixture for 16 hours at 140 ℃, transferring an aged product into a reaction kettle, pressurizing the mixture to 1.19MPa, setting the reaction temperature to 185 ℃, setting the reaction time to 21 hours, naturally cooling the mixture to 28 ℃ after the reaction is finished, pouring out supernatant liquid, sequentially washing the lower part of precipitate by using the deionized water and absolute ethyl alcohol for 5 times respectively, then placing the precipitate into a vacuum drying box at 90 ℃ for drying for 10 hours, cooling and grinding the precipitate into powder to obtain the protein modifier with the particle size of 0.04-0.08 micrometers.
The protein adhesive is prepared by using defatted soybean powder as a raw material according to the preparation method of the embodiment 3, the storage period of the protein adhesive reaches 12 months, the protein adhesive is not decayed, the three-layer corrugated paper box board is bonded, and the bonding strength is tested according to GB/T6548-1998; the edge pressure strength is tested according to GB/T6546-; the paper weight of the three-layer corrugated board is 500g/m2, and the adhesive weight is 300 g/m 2. The adhesive prepared in example 1 was subjected to performance testing, three experiments were repeated, and finally, the average value of each performance parameter was determined, and the result was: the adhesive prepared in example 3 has the adhesive strength of 146N/10 cm and the edge pressure strength of 8895N/m; .
Comparative example 3
The difference from the example 3 is that the addition of stearic acid and Y-aminopropyl methyl diethoxy silane is omitted in the preparation of the natural adhesive, and the rest is kept consistent; keeping the independent variables consistent, preparing the protein adhesive according to the preparation method of the comparative example 3, wherein the storage period of validity reaches 9 months, the putrefaction phenomenon appears, adhering the three-layer corrugated cardboard, and performing performance test on the prepared adhesive, wherein the manufacturing processes of the three-layer corrugated cardboard are completely the same, the adhesive strength of the prepared adhesive is 93N/10 cm, and the edge pressure strength of the cardboard is 6340N/m.
Claims (5)
1. The natural adhesive for bonding the cartons is characterized by being prepared from the following components in parts by weight: 17-22 parts of soybean protein, 52-58 parts of water, 1.3-1.4 parts of protein modifier, 0.34-0.36 part of stearic acid, 0.8-1.0 part of polyethylene glycol, 0.05-0.08 part of Y-aminopropyl methyl diethoxy silane and 0.4-0.5 part of sodium dihydrogen phosphate;
the preparation process comprises the following steps:
grinding soybean protein into powder, sieving with a sieve of 110-140 meshes, carrying out microwave treatment for 200 seconds with the treatment time of 180-200 meshes, then naturally cooling, standing for 3-4 hours, adding water, stirring and mixing uniformly, adding the prepared protein modifier, heating to 45-48 ℃, adding stearic acid and polyethylene glycol, placing in an aging box at 60-62 ℃ for aging treatment for 2-3 hours, taking out, cooling to 25-30 ℃, adding Y-aminopropylmethyldiethoxysilane and sodium dihydrogen phosphate, and continuing stirring for 30-40 minutes.
2. The natural adhesive for carton bonding as claimed in claim 1, wherein the soybean protein is one or more of defatted soybean flour and soybean protein isolate.
3. The natural adhesive for carton bonding according to claim 1, wherein the protein modifier is prepared by the following steps: weighing 7.1-7.3 g of calcium carbonate and 0.8-1.0 g of copper nitrate, placing the calcium carbonate and the copper nitrate into a beaker, adding 30-35 ml of deionized water, continuously stirring the mixture on a magnetic stirrer for 40-50 minutes, then adding 15-20 ml of 10-12% sodium hydroxide solution into the beaker under stirring, continuously stirring the mixture for 15-20 minutes, standing and aging the mixture for 12-16 hours at the temperature of 120-140 ℃, transferring the aged product into a reaction kettle, pressurizing the aged product to 1.15-1.19MPa, setting the reaction temperature to be 180-185 ℃, reacting the aged product for 19-21 hours, naturally cooling the aged product to 25-28 ℃ after the reaction is finished, pouring out supernatant liquid, sequentially washing the partial precipitate by using the deionized water and absolute ethyl alcohol for 3-5 times respectively, then placing the washed precipitate in a vacuum drying oven at the temperature of 80-90 ℃ for drying the mixture for 7-10 hours, cooling and grinding into powder to obtain the protein modifier with the particle size of 0.04-0.08 micron.
4. The natural adhesive for carton bonding according to claim 1, wherein the polyethylene glycol has a molecular weight of 1000.
5. The natural adhesive for carton bonding as claimed in claim 1, wherein the microwave treatment frequency in the preparation process is 1500-1600 MHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011352529.1A CN112280531B (en) | 2020-11-27 | 2020-11-27 | Natural adhesive for carton bonding |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011352529.1A CN112280531B (en) | 2020-11-27 | 2020-11-27 | Natural adhesive for carton bonding |
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| CN112280531A true CN112280531A (en) | 2021-01-29 |
| CN112280531B CN112280531B (en) | 2021-10-29 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150000560A1 (en) * | 2013-07-01 | 2015-01-01 | Jr Co., Ltd. | Natural adhesive |
| CN106085349A (en) * | 2016-07-19 | 2016-11-09 | 宁波朴锐环保科技有限公司 | The preparation technology of a kind of decorative panel, decorative panel stick with glue agent and preparation technology thereof |
| CN107142043A (en) * | 2017-06-29 | 2017-09-08 | 荆州市九天化工科技有限公司 | Production technology and application method of a kind of bio-based without aldehyde sheet material glue |
-
2020
- 2020-11-27 CN CN202011352529.1A patent/CN112280531B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150000560A1 (en) * | 2013-07-01 | 2015-01-01 | Jr Co., Ltd. | Natural adhesive |
| CN106085349A (en) * | 2016-07-19 | 2016-11-09 | 宁波朴锐环保科技有限公司 | The preparation technology of a kind of decorative panel, decorative panel stick with glue agent and preparation technology thereof |
| CN107142043A (en) * | 2017-06-29 | 2017-09-08 | 荆州市九天化工科技有限公司 | Production technology and application method of a kind of bio-based without aldehyde sheet material glue |
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| CN112280531B (en) | 2021-10-29 |
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Denomination of invention: A natural adhesive for cardboard box bonding Effective date of registration: 20230724 Granted publication date: 20211029 Pledgee: Huishang Bank Co.,Ltd. Hanshan sub branch Pledgor: MAANSHAN KANGHUI CARTON AND PAPER PRODUCTS CO.,LTD. Registration number: Y2023980049373 |
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Denomination of invention: A natural adhesive for cardboard box bonding Effective date of registration: 20230829 Granted publication date: 20211029 Pledgee: Huishang Bank Co.,Ltd. Hanshan sub branch Pledgor: MAANSHAN KANGHUI CARTON AND PAPER PRODUCTS CO.,LTD. Registration number: Y2023980054563 |
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